Hi Prof Christie. Rowe,
The sample was grinded into powder and passed through the 300 mesh size seive(the sample particle size is less than 50 micron).
Date: Mon, 14 Nov 2011 10:18:49 -0500
From:
[log in to unmask]Subject: Re: Anyone can give me some advice?
To:
[log in to unmask]How was the sample prepared for XRD?
2011/11/14 张雷
<[log in to unmask]>
Hi,
Now I am doing the natural gouge experiment using the triaxial appratus.
and I am confused by the samples' XRD data.
The black natural gouge sample(water-saturated) is very soft and smoothly when you touch it, and it looks very like cohesive soil.
but the XRD data showes the major mineral content is quartz (90%)and the clay mineral is little (3%).
anyone can give me some advice why the sample(containing very high quartz content) looks like cohesive soil, and its fricitonal strength
is low to 0.3-0.35?
--
***********************************************
Christie Rowe
Asst. Prof & Wares Faculty Scholar
Earth & Planetary Sciences, McGill University
3450 University St., Montreal, QC H3A 2A7
Office: 514 398 2769
http://eps.mcgill.ca/~crowe
